Patents by Inventor Helmut Dupont

Helmut Dupont has filed for patents to protect the following inventions. This listing includes patent applications that are pending as well as patents that have already been granted by the United States Patent and Trademark Office (USPTO).

  • Loopback test for data transmission paths
    Patent number: 4271514
    Abstract: A data transmission path comprises a first and a second station, a first data transmission channel operative for synchronously transmitting data from the first to the second station in synchronism with a predetermined clocking schedule and at a respective first maximum data transmission rate, and a second data transmission channel for asynchronously transmitting data from the second to the first station at a respective second maximum data transmission rate, the first maximum data transmission rate being equal to a multiple p of the second maximum data transmission rate. A test waveform is applied to the first station for transmission to the second station along the first data transmission channel, the test waveform presenting a data transmission rate at least approximately equal to said first maximum data transmission rate.
    Type: Grant
    Filed: August 29, 1979
    Date of Patent: June 2, 1981
    Assignee: Te Ka De, Felten & Guilleaume, Fernmeldeanlagen GmbH
    Inventors: Karlheinz Parras, Edgar Bader, Helmut Dupont